package e2e

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
)

// TestRepoFacts covers the repository summary: counts, license, languages,
// and contributors resolved to accounts where the email is verified.
func TestRepoFacts(t *testing.T) {
	inst := startInstance(t)
	aliceKey := inst.newKey(t, "alice")
	inst.admin(t, "admin", "user", "create", "alice",
		"--key", aliceKey+".pub", "--email", "alice@example.test", "--verified")
	if _, errOut, code := inst.ssh(t, aliceKey, "", "repo", "create", "alice/app"); code != 0 {
		t.Fatalf("repo create: %s", errOut)
	}

	work := t.TempDir()
	env := inst.gitEnv(aliceKey)
	aliceEnv := append(append([]string{}, env...),
		"GIT_AUTHOR_NAME=Alice", "GIT_AUTHOR_EMAIL=alice@example.test")
	mustGit(t, work, env, "clone", inst.sshURL("alice/app"), "w")
	dir := filepath.Join(work, "w")

	os.WriteFile(filepath.Join(dir, "main.go"), []byte("package main\n\nfunc main() {}\n"), 0o644)
	os.WriteFile(filepath.Join(dir, "run.sh"), []byte("#!/bin/sh\necho hi\n"), 0o644)
	os.WriteFile(filepath.Join(dir, "LICENSE"), []byte(zeroBSD), 0o644)
	mustGit(t, dir, env, "checkout", "-q", "-b", "main")
	mustGit(t, dir, env, "add", ".")
	mustGit(t, dir, aliceEnv, "commit", "-q", "-m", "one")
	// A second commit by someone with no account here.
	os.WriteFile(filepath.Join(dir, "extra.go"), []byte("package main\n"), 0o644)
	mustGit(t, dir, env, "add", ".")
	mustGit(t, dir, env, "commit", "-q", "-m", "two")
	mustGit(t, dir, env, "push", "-q", "origin", "main")
	mustGit(t, dir, env, "tag", "v0.1.0")
	mustGit(t, dir, env, "push", "-q", "origin", "v0.1.0")

	status, body := inst.get(t, "/alice/app")
	if status != 200 {
		t.Fatalf("repo home: %d", status)
	}
	for _, want := range []string{
		"<strong>2</strong> commit", // both commits counted
		"<strong>1</strong> branch",
		"<strong>1</strong> tag",
		"0BSD",  // license detected and surfaced
		"Go",    // language census
		"Shell", // and it is not single-language
		"2 contributors",
	} {
		if !strings.Contains(body, want) {
			t.Errorf("repo home missing %q", want)
		}
	}
	// The contributor with a verified email links to their profile; the
	// other is named without inventing an account for them.
	if !strings.Contains(body, `href="/alice"`) {
		t.Error("verified contributor not linked to their profile")
	}
	if strings.Contains(body, `href="/t"`) {
		t.Error("unknown contributor linked to a profile that does not exist")
	}

	// Subdirectory listings are about the directory, not the repository.
	mustGit(t, dir, env, "rm", "-q", "extra.go")
	os.MkdirAll(filepath.Join(dir, "sub"), 0o755)
	os.WriteFile(filepath.Join(dir, "sub", "x.go"), []byte("package sub\n"), 0o644)
	mustGit(t, dir, env, "add", "-A")
	mustGit(t, dir, env, "commit", "-q", "-m", "sub")
	mustGit(t, dir, env, "push", "-q", "origin", "main")
	if _, body := inst.get(t, "/alice/app/tree/main/sub"); strings.Contains(body, "contributor") {
		t.Error("facts bar rendered on a subdirectory listing")
	}

	// A repository with no commits has no facts to state, and must still
	// render — the empty case renders through the same page type.
	if _, _, code := inst.ssh(t, aliceKey, "", "repo", "create", "alice/empty"); code != 0 {
		t.Fatal("repo create failed")
	}
	if status, body := inst.get(t, "/alice/empty"); status != 200 {
		t.Fatalf("empty repo home: %d", status)
	} else if strings.Contains(body, "contributor") {
		t.Error("empty repository claims contributors")
	}
}

const zeroBSD = `Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE.
`